FR840153A - Improvements to gas masks - Google Patents
Improvements to gas masksInfo
- Publication number
- FR840153A FR840153A FR840153DA FR840153A FR 840153 A FR840153 A FR 840153A FR 840153D A FR840153D A FR 840153DA FR 840153 A FR840153 A FR 840153A
- Authority
- FR
- France
- Prior art keywords
- gas masks
- masks
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT840153X | 1937-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR840153A true FR840153A (en) | 1939-04-20 |
Family
ID=11323932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR840153D Expired FR840153A (en) | 1937-07-03 | 1938-07-01 | Improvements to gas masks |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR840153A (en) |
-
1938
- 1938-07-01 FR FR840153D patent/FR840153A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR840303A (en) | Gas turbines | |
FR872646A (en) | Improvements to gas turbines | |
FR782137A (en) | Improvements to gas masks | |
FR807328A (en) | Improvements to gas filters | |
FR828783A (en) | Improvements to gas masks | |
FR859715A (en) | Improvements to gas masks | |
FR825135A (en) | Improvements to gas barometers | |
FR840153A (en) | Improvements to gas masks | |
FR737725A (en) | Improvements to gas masks | |
FR838138A (en) | Gas mask | |
FR848268A (en) | Improvements to gas masks | |
FR831668A (en) | Advanced gas mask | |
FR46547E (en) | Improvements to gas filters | |
FR859868A (en) | Improvements to gas masks | |
FR858825A (en) | Improvements to gas masks | |
FR51401E (en) | Improvements to gas masks | |
FR843953A (en) | Improvements to gas masks | |
FR50117E (en) | Improvements to gas masks | |
FR827747A (en) | Improvements to gas scrubbers | |
FR826057A (en) | Improvement in gas masks | |
FR828785A (en) | Improvement in gas masks | |
FR840403A (en) | Improvements to gas turbines | |
FR785542A (en) | Improvements to gas masks | |
FR801988A (en) | Improvements to gas masks | |
FR46880E (en) | Improvements to gas masks |